Knob



FIG. 1 is a perspective view of a knob, showing our new design;

FIG. 2 is a front side elevational view thereof, the rear, right and left side elevational views being identical;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a knob, as shown and described. 